Dumb 'programming' question

[EMwhite]

Recently got my hands on Wendy Carlos's "Secrets of Synthesis"; great piece of work and very informative. If you haven't heard of it, you ought to buy a copy.

Anyway, she talks about the advent of touch sensitivity and how it took a bit for the initial implementation, ultimately, Bob came through.

But while listening, I realized that when it comes to patching a mod bus Velocity to Amplitude, I wasn't quite sure how to go about it? (is there a VCA option on other synths?)

I have an Old School and it's easy enough to patch Velocity to a bunch of things but ... ummm, what am I missing?

Thanks

[phlegm]

I think this thread has what you're looking for:

http://www.moogmusic.com/forum/viewtopic.php?t=2633

[EMwhite]

I think this thread has what you're looking for:

http://www.moogmusic.com/forum/viewtopic.php?t=2633

Saw that. Suffice to say, there is no option to do this on the Old School?

Thanks

[phlegm]

Sorry, I overlooked that you have an OS.

I don't have a VX-351, so I can't try this. But I think it might work to connect the velocity out CV from a VX-351 to the (master?) volume input on the back.

[EricK]

That would probably work. I think without a VX 351 you can still get some hellatious kick drums with triangle waves, lots of filtering and fast attacks with little to no sustain and release.

Eric

[Portamental]

What you call touch sensitivity is also called after touch or after pressure depending on where you read. No need for any extra hardware to use after touch on the OS. You control it by choosing it (pressure) on any mod bus controller switch. Add controller amount to taste. I thought it was cool for a while, but then I got worried of using too much pressure too often (you have to press quite a bit to get max amount) and I don't want my OS keyboard to need servicing some years down the road, so I use it more sparingly now.

[EMwhite]

What you call touch sensitivity is also called after touch or after pressure depending on where you read. No need for any extra hardware to use after touch on the OS. You control it by choosing it (pressure) on any mod bus controller switch. Add controller amount to taste. I thought it was cool for a while, but then I got worried of using too much pressure too often (you have to press quite a bit to get max amount) and I don't want my OS keyboard to need servicing some years down the road, so I use it more sparingly now.

But doesn't Velocity = Touch sensitivity and After touch = 'pressure' (using some digital/midi parlance).

I'm after the initial strike of the key and I think the answer was, get a VX351 and patch the VEL into Volume... The only issue is (I think) that the CV will only be high during that initial strike, and therefore the volume will be high at that point also. Keeping the keys pressed down may turn into After/Pressure as opposed to the initial strike and Volume will then get very low. I suppose this can be attenuated and should be so that the nominal level is just slightly lower than full volume therefore you can play with some expression.

It really depends on how Moog implemented it I think. Anybody have a standard Old School and 351 that can try this?

There is a 351 in my future but not until after a CP-251 and some Synth.com modules. (sort of reminds me of how I went from one Pinball machine to 17 in my basement !! Luckily this gear takes up much less room but isn't an less expensive).

Thanks

[Portamental]

But doesn't Velocity = Touch sensitivity and After touch = 'pressure' (using some digital/midi parlance).

I'm after the initial strike of the key and I think the answer was, get a VX351 and patch the VEL into Volume... The only issue is (I think) that the CV will only be high during that initial strike, and therefore the volume will be high at that point also. Keeping the keys pressed down may turn into After/Pressure as opposed to the initial strike and Volume will then get very low. I suppose this can be attenuated and should be so that the nominal level is just slightly lower than full volume therefore you can play with some expression.

It really depends on how Moog implemented it I think.

They did it fine. You get both velocity and pressure if you want to use both mod busses, without the VX-351. The parlance may differ elsewhere but velocity is the speed at which you press the key will result in a lower volume note, and pressure what happens when you hold the key varying pressure (that will control your destination when you set source to mod2/on with the selector switch).

[EricK]

In my experience, the velocity really comes in when you are doing fast phrases. THe keys go down faster with no more pressure or heavyhandedness. Of corse I think you already know the difference, but when I first thought of velocity I thought the ony way to do it is to hit the keys harder.

I got the feeling of how sensitive the velocity is by programming the velocity to directly correspond to the pitch of Osc 2 (sync). I did the exact same thing for afterpressure. FWIW, I rarely use these.

Just a reminder, the velocity and aftertouch are added to the amount set on the amount knob.

Eric

[phlegm]

In my experience, the velocity really comes in when you are doing fast phrases. THe keys go down faster with no more pressure or heavyhandedness. Of corse I think you already know the difference, but when I first thought of velocity I thought the ony way to do it is to hit the keys harder.

High velocity has nothing to do with playing fast. Velocity is simply how hard you initially strike the key. Those of us with piano training know how to play fast yet with low velocity.